./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:56:01,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:56:01,914 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:56:01,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:56:01,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:56:01,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:56:01,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:56:01,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:56:01,967 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:56:01,967 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:56:01,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:56:01,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:56:01,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:56:01,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:56:01,970 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:56:01,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:56:01,971 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:56:01,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:56:01,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:56:01,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:56:01,972 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:56:01,974 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:56:01,974 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:56:01,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:56:01,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:56:01,975 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:56:01,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:56:01,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:56:01,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:56:01,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:56:01,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:56:01,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:56:01,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:56:01,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:01,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:56:01,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:56:01,978 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:56:01,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:56:01,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:56:01,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:56:01,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:56:01,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:56:01,995 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 [2024-10-11 19:56:02,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:56:02,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:56:02,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:56:02,257 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:56:02,258 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:56:02,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-11 19:56:03,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:56:03,929 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:56:03,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-11 19:56:03,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b6686161b/dfa003241bb64531b3c0095d630e7b54/FLAGc3c0f3550 [2024-10-11 19:56:03,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b6686161b/dfa003241bb64531b3c0095d630e7b54 [2024-10-11 19:56:03,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:56:03,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:56:03,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:03,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:56:03,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:56:03,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:03" (1/1) ... [2024-10-11 19:56:03,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40afa784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:03, skipping insertion in model container [2024-10-11 19:56:03,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:03" (1/1) ... [2024-10-11 19:56:03,990 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:04,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:04,219 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:56:04,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52812aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:04, skipping insertion in model container [2024-10-11 19:56:04,220 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:04,221 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:56:04,222 INFO L158 Benchmark]: Toolchain (without parser) took 263.70ms. Allocated memory is still 178.3MB. Free memory was 148.9MB in the beginning and 137.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:56:04,222 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 178.3MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:56:04,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.70ms. Allocated memory is still 178.3MB. Free memory was 148.9MB in the beginning and 137.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:56:04,225 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 178.3MB. Free memory is still 148.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.70ms. Allocated memory is still 178.3MB. Free memory was 148.9MB in the beginning and 137.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 96]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:56:06,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:56:06,275 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:56:06,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:56:06,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:56:06,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:56:06,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:56:06,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:56:06,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:56:06,326 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:56:06,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:56:06,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:56:06,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:56:06,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:56:06,330 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:56:06,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:56:06,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:56:06,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:56:06,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:56:06,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:56:06,331 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:56:06,335 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:56:06,335 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:56:06,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:56:06,336 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:56:06,336 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:56:06,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:56:06,336 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:56:06,336 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:56:06,337 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:56:06,337 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:56:06,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:56:06,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:56:06,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:56:06,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:56:06,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:06,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:56:06,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:56:06,340 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:56:06,340 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:56:06,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:56:06,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:56:06,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:56:06,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:56:06,341 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:56:06,342 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf94362dc31684fc6d7640230484df679da941d20fe978f9edfe1d75c48a51 [2024-10-11 19:56:06,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:56:06,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:56:06,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:56:06,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:56:06,657 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:56:06,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-11 19:56:08,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:56:08,384 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:56:08,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-10-11 19:56:08,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c89fb7a73/50ab2ffd5ac94ce6842847d176c12853/FLAG88ac9a1d0 [2024-10-11 19:56:08,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c89fb7a73/50ab2ffd5ac94ce6842847d176c12853 [2024-10-11 19:56:08,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:56:08,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:56:08,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:08,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:56:08,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:56:08,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:08" (1/1) ... [2024-10-11 19:56:08,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26af0fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:08, skipping insertion in model container [2024-10-11 19:56:08,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:08" (1/1) ... [2024-10-11 19:56:08,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:09,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:09,054 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:56:09,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:09,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:09,089 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:56:09,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:09,142 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:56:09,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09 WrapperNode [2024-10-11 19:56:09,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:09,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:56:09,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:56:09,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:56:09,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,193 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 138 [2024-10-11 19:56:09,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:56:09,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:56:09,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:56:09,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:56:09,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,209 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,234 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [3, 2]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 1 writes are split as follows [1, 0]. [2024-10-11 19:56:09,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:56:09,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:56:09,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:56:09,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:56:09,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (1/1) ... [2024-10-11 19:56:09,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:09,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:56:09,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:56:09,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:56:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:56:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:56:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:56:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:56:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:56:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:56:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:56:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:56:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:56:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:56:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:56:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:56:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:56:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:56:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:56:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:56:09,355 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:56:09,457 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:56:09,460 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:56:09,819 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:56:09,819 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:56:10,100 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:56:10,100 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:56:10,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:56:10 BoogieIcfgContainer [2024-10-11 19:56:10,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:56:10,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:56:10,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:56:10,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:56:10,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:56:08" (1/3) ... [2024-10-11 19:56:10,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b493b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:56:10, skipping insertion in model container [2024-10-11 19:56:10,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:09" (2/3) ... [2024-10-11 19:56:10,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b493b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:56:10, skipping insertion in model container [2024-10-11 19:56:10,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:56:10" (3/3) ... [2024-10-11 19:56:10,111 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-10-11 19:56:10,125 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:56:10,125 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 19:56:10,126 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:56:10,186 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:56:10,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 35 transitions, 84 flow [2024-10-11 19:56:10,250 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2024-10-11 19:56:10,250 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:56:10,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 3/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-11 19:56:10,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 35 transitions, 84 flow [2024-10-11 19:56:10,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 76 flow [2024-10-11 19:56:10,268 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:56:10,276 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@212a4b98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:56:10,277 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-11 19:56:10,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:56:10,281 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:56:10,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:56:10,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:10,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:56:10,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:10,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 453942, now seen corresponding path program 1 times [2024-10-11 19:56:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:10,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554382026] [2024-10-11 19:56:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:10,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:10,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:10,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:10,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:56:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:10,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:56:10,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:10,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:10,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:10,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554382026] [2024-10-11 19:56:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554382026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:10,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:56:10,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833208353] [2024-10-11 19:56:10,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:10,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:56:10,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:56:10,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:56:10,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:10,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:10,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:10,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:10,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:10,672 INFO L124 PetriNetUnfolderBase]: 128/253 cut-off events. [2024-10-11 19:56:10,672 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-11 19:56:10,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 253 events. 128/253 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1094 event pairs, 100 based on Foata normal form. 1/196 useless extension candidates. Maximal degree in co-relation 448. Up to 221 conditions per place. [2024-10-11 19:56:10,677 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-11 19:56:10,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 116 flow [2024-10-11 19:56:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:56:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:56:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-11 19:56:10,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-10-11 19:56:10,689 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 3 states and 52 transitions. [2024-10-11 19:56:10,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 116 flow [2024-10-11 19:56:10,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:10,695 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-10-11 19:56:10,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-11 19:56:10,702 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-10-11 19:56:10,704 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-10-11 19:56:10,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:10,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:10,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:56:10,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:10,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:10,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:10,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash 453943, now seen corresponding path program 1 times [2024-10-11 19:56:10,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:10,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914963035] [2024-10-11 19:56:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:10,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:10,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:10,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:10,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:56:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:10,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:56:10,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:10,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:11,088 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:11,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:11,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914963035] [2024-10-11 19:56:11,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914963035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:11,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:11,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631059187] [2024-10-11 19:56:11,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:11,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:11,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:11,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:11,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:11,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:11,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:11,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:11,363 INFO L124 PetriNetUnfolderBase]: 129/256 cut-off events. [2024-10-11 19:56:11,363 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 19:56:11,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 256 events. 129/256 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1126 event pairs, 100 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 474. Up to 226 conditions per place. [2024-10-11 19:56:11,368 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 23 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-10-11 19:56:11,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 128 flow [2024-10-11 19:56:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:56:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:56:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-11 19:56:11,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-11 19:56:11,371 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 64 transitions. [2024-10-11 19:56:11,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 128 flow [2024-10-11 19:56:11,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:11,373 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-10-11 19:56:11,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-10-11 19:56:11,376 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-10-11 19:56:11,376 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-10-11 19:56:11,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:11,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:11,379 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:56:11,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:11,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:11,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:11,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash 436253028, now seen corresponding path program 1 times [2024-10-11 19:56:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019830937] [2024-10-11 19:56:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:11,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:11,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:11,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:56:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:11,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:56:11,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:11,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:11,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:12,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:12,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019830937] [2024-10-11 19:56:12,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019830937] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:12,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:12,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:56:12,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814347077] [2024-10-11 19:56:12,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:12,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:56:12,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:56:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:56:12,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:12,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:12,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:12,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:12,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:12,587 INFO L124 PetriNetUnfolderBase]: 132/265 cut-off events. [2024-10-11 19:56:12,587 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 19:56:12,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 265 events. 132/265 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1181 event pairs, 100 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 481. Up to 229 conditions per place. [2024-10-11 19:56:12,590 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 23 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2024-10-11 19:56:12,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 197 flow [2024-10-11 19:56:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:56:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:56:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-10-11 19:56:12,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36857142857142855 [2024-10-11 19:56:12,593 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 10 states and 129 transitions. [2024-10-11 19:56:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 197 flow [2024-10-11 19:56:12,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:56:12,595 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 166 flow [2024-10-11 19:56:12,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-10-11 19:56:12,596 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-10-11 19:56:12,596 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 166 flow [2024-10-11 19:56:12,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:12,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:12,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:56:12,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:56:12,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:12,798 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:12,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:12,799 INFO L85 PathProgramCache]: Analyzing trace with hash 640967830, now seen corresponding path program 1 times [2024-10-11 19:56:12,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:12,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953961967] [2024-10-11 19:56:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:12,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:12,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:12,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:12,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:56:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:12,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:56:12,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:12,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:12,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:12,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953961967] [2024-10-11 19:56:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953961967] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:12,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:12,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:12,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927317036] [2024-10-11 19:56:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:12,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:12,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:12,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:12,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:12,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:12,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:12,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:13,016 INFO L124 PetriNetUnfolderBase]: 96/200 cut-off events. [2024-10-11 19:56:13,016 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-11 19:56:13,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 200 events. 96/200 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 791 event pairs, 68 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 394. Up to 163 conditions per place. [2024-10-11 19:56:13,018 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 27 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-10-11 19:56:13,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 228 flow [2024-10-11 19:56:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:56:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:56:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-10-11 19:56:13,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-10-11 19:56:13,020 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 166 flow. Second operand 4 states and 59 transitions. [2024-10-11 19:56:13,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 228 flow [2024-10-11 19:56:13,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 198 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:13,023 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 144 flow [2024-10-11 19:56:13,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-10-11 19:56:13,026 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-10-11 19:56:13,026 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 144 flow [2024-10-11 19:56:13,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:13,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:13,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:56:13,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:56:13,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:13,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:13,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash 640967831, now seen corresponding path program 1 times [2024-10-11 19:56:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408873260] [2024-10-11 19:56:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:13,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:13,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:13,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:13,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:56:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:13,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:56:13,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:13,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:13,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:13,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408873260] [2024-10-11 19:56:13,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408873260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:13,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:56:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329015340] [2024-10-11 19:56:13,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:13,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:56:13,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:56:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:56:13,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:13,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:13,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:13,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:13,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:13,766 INFO L124 PetriNetUnfolderBase]: 188/364 cut-off events. [2024-10-11 19:56:13,766 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 19:56:13,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 364 events. 188/364 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1556 event pairs, 83 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 704. Up to 204 conditions per place. [2024-10-11 19:56:13,769 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 44 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-10-11 19:56:13,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 298 flow [2024-10-11 19:56:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:56:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:56:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-11 19:56:13,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-11 19:56:13,772 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 144 flow. Second operand 6 states and 99 transitions. [2024-10-11 19:56:13,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 298 flow [2024-10-11 19:56:13,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:13,777 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 186 flow [2024-10-11 19:56:13,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-10-11 19:56:13,779 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-10-11 19:56:13,779 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 186 flow [2024-10-11 19:56:13,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:13,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:13,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:13,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:13,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:13,981 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:13,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1766245300, now seen corresponding path program 1 times [2024-10-11 19:56:13,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:13,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689489636] [2024-10-11 19:56:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:13,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:13,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:13,983 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:13,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:56:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:14,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:56:14,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:14,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:14,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:14,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:14,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689489636] [2024-10-11 19:56:14,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689489636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:14,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:14,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:56:14,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814522087] [2024-10-11 19:56:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:14,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:56:14,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:14,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:56:14,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:56:14,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:14,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:14,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:14,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:14,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:14,542 INFO L124 PetriNetUnfolderBase]: 299/546 cut-off events. [2024-10-11 19:56:14,543 INFO L125 PetriNetUnfolderBase]: For 224/254 co-relation queries the response was YES. [2024-10-11 19:56:14,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 546 events. 299/546 cut-off events. For 224/254 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2376 event pairs, 132 based on Foata normal form. 31/530 useless extension candidates. Maximal degree in co-relation 1313. Up to 325 conditions per place. [2024-10-11 19:56:14,548 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 50 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-10-11 19:56:14,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 398 flow [2024-10-11 19:56:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:56:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:56:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-11 19:56:14,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-10-11 19:56:14,550 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 186 flow. Second operand 6 states and 97 transitions. [2024-10-11 19:56:14,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 398 flow [2024-10-11 19:56:14,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:14,554 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 220 flow [2024-10-11 19:56:14,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-10-11 19:56:14,555 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-10-11 19:56:14,555 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 220 flow [2024-10-11 19:56:14,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:14,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:14,556 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:14,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:56:14,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:14,759 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:14,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:14,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1988993276, now seen corresponding path program 1 times [2024-10-11 19:56:14,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287107546] [2024-10-11 19:56:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:14,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:14,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:14,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:14,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:56:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:14,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:56:14,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:14,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:14,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:14,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:14,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287107546] [2024-10-11 19:56:14,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287107546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:14,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:14,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:56:14,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478221118] [2024-10-11 19:56:14,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:14,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:56:14,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:14,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:56:14,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:56:15,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-10-11 19:56:15,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:15,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:15,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-10-11 19:56:15,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:15,280 INFO L124 PetriNetUnfolderBase]: 273/557 cut-off events. [2024-10-11 19:56:15,281 INFO L125 PetriNetUnfolderBase]: For 381/414 co-relation queries the response was YES. [2024-10-11 19:56:15,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 557 events. 273/557 cut-off events. For 381/414 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2648 event pairs, 182 based on Foata normal form. 39/578 useless extension candidates. Maximal degree in co-relation 1545. Up to 397 conditions per place. [2024-10-11 19:56:15,285 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 50 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-10-11 19:56:15,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 383 flow [2024-10-11 19:56:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:56:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:56:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-11 19:56:15,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-10-11 19:56:15,287 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 220 flow. Second operand 5 states and 93 transitions. [2024-10-11 19:56:15,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 383 flow [2024-10-11 19:56:15,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:15,295 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 242 flow [2024-10-11 19:56:15,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-10-11 19:56:15,296 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2024-10-11 19:56:15,297 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 242 flow [2024-10-11 19:56:15,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:15,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:15,298 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:56:15,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:56:15,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:15,501 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:15,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1805333099, now seen corresponding path program 2 times [2024-10-11 19:56:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:15,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087096162] [2024-10-11 19:56:15,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:56:15,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:15,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:15,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:15,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:56:15,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:56:15,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:56:15,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:56:15,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:15,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:15,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:16,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:16,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087096162] [2024-10-11 19:56:16,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087096162] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:16,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:16,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:56:16,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223027879] [2024-10-11 19:56:16,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:16,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:16,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:16,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:16,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 242 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:16,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:16,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:16,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:18,257 INFO L124 PetriNetUnfolderBase]: 279/573 cut-off events. [2024-10-11 19:56:18,257 INFO L125 PetriNetUnfolderBase]: For 739/805 co-relation queries the response was YES. [2024-10-11 19:56:18,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 573 events. 279/573 cut-off events. For 739/805 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2699 event pairs, 191 based on Foata normal form. 32/579 useless extension candidates. Maximal degree in co-relation 1672. Up to 450 conditions per place. [2024-10-11 19:56:18,261 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 31 changer transitions 0/67 dead transitions. [2024-10-11 19:56:18,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 452 flow [2024-10-11 19:56:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:56:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:56:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 256 transitions. [2024-10-11 19:56:18,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33246753246753247 [2024-10-11 19:56:18,264 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 242 flow. Second operand 22 states and 256 transitions. [2024-10-11 19:56:18,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 67 transitions, 452 flow [2024-10-11 19:56:18,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:18,267 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 419 flow [2024-10-11 19:56:18,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=419, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-10-11 19:56:18,269 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2024-10-11 19:56:18,270 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 419 flow [2024-10-11 19:56:18,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:18,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:18,271 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:18,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:56:18,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:18,475 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:18,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1956364241, now seen corresponding path program 1 times [2024-10-11 19:56:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:18,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508369485] [2024-10-11 19:56:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:18,477 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:18,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:56:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:18,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:56:18,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:18,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:18,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:19,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508369485] [2024-10-11 19:56:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508369485] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:19,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:56:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400140609] [2024-10-11 19:56:19,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:19,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:19,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:19,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 419 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:19,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:19,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:19,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:20,541 INFO L124 PetriNetUnfolderBase]: 638/1186 cut-off events. [2024-10-11 19:56:20,541 INFO L125 PetriNetUnfolderBase]: For 1082/1158 co-relation queries the response was YES. [2024-10-11 19:56:20,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1186 events. 638/1186 cut-off events. For 1082/1158 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5549 event pairs, 110 based on Foata normal form. 106/1279 useless extension candidates. Maximal degree in co-relation 3657. Up to 296 conditions per place. [2024-10-11 19:56:20,552 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 140 selfloop transitions, 30 changer transitions 0/176 dead transitions. [2024-10-11 19:56:20,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 176 transitions, 1226 flow [2024-10-11 19:56:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:56:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:56:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-10-11 19:56:20,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512087912087912 [2024-10-11 19:56:20,555 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 419 flow. Second operand 13 states and 233 transitions. [2024-10-11 19:56:20,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 176 transitions, 1226 flow [2024-10-11 19:56:20,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 176 transitions, 1146 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-11 19:56:20,562 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 497 flow [2024-10-11 19:56:20,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=497, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-10-11 19:56:20,563 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2024-10-11 19:56:20,563 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 497 flow [2024-10-11 19:56:20,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:20,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:20,564 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:20,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:20,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:20,765 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:20,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1453361676, now seen corresponding path program 1 times [2024-10-11 19:56:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:20,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117209187] [2024-10-11 19:56:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:20,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:20,767 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:20,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:56:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:20,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:56:20,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:20,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:21,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:21,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117209187] [2024-10-11 19:56:21,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117209187] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:21,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:21,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:56:21,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398310049] [2024-10-11 19:56:21,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:21,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:21,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:21,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:21,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:21,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 497 flow. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:21,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:21,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:21,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:23,403 INFO L124 PetriNetUnfolderBase]: 1144/2052 cut-off events. [2024-10-11 19:56:23,403 INFO L125 PetriNetUnfolderBase]: For 5022/5246 co-relation queries the response was YES. [2024-10-11 19:56:23,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7569 conditions, 2052 events. 1144/2052 cut-off events. For 5022/5246 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10239 event pairs, 238 based on Foata normal form. 186/2187 useless extension candidates. Maximal degree in co-relation 7515. Up to 551 conditions per place. [2024-10-11 19:56:23,421 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 195 selfloop transitions, 29 changer transitions 2/236 dead transitions. [2024-10-11 19:56:23,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 236 transitions, 2121 flow [2024-10-11 19:56:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:56:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:56:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 223 transitions. [2024-10-11 19:56:23,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4901098901098901 [2024-10-11 19:56:23,424 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 497 flow. Second operand 13 states and 223 transitions. [2024-10-11 19:56:23,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 236 transitions, 2121 flow [2024-10-11 19:56:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 236 transitions, 1938 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:23,436 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 620 flow [2024-10-11 19:56:23,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=620, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-10-11 19:56:23,437 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2024-10-11 19:56:23,438 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 620 flow [2024-10-11 19:56:23,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:23,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:23,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:23,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:23,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:23,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:23,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash 231571293, now seen corresponding path program 1 times [2024-10-11 19:56:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961488009] [2024-10-11 19:56:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:23,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:23,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:23,643 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:23,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:56:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:23,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:56:23,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:23,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:23,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961488009] [2024-10-11 19:56:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961488009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:23,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:23,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:23,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059098974] [2024-10-11 19:56:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:23,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:56:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:56:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:56:23,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-10-11 19:56:23,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:23,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:23,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-10-11 19:56:23,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:24,161 INFO L124 PetriNetUnfolderBase]: 1385/2493 cut-off events. [2024-10-11 19:56:24,161 INFO L125 PetriNetUnfolderBase]: For 6850/7020 co-relation queries the response was YES. [2024-10-11 19:56:24,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9665 conditions, 2493 events. 1385/2493 cut-off events. For 6850/7020 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12313 event pairs, 473 based on Foata normal form. 81/2530 useless extension candidates. Maximal degree in co-relation 9606. Up to 2020 conditions per place. [2024-10-11 19:56:24,184 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 83 selfloop transitions, 3 changer transitions 4/104 dead transitions. [2024-10-11 19:56:24,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 885 flow [2024-10-11 19:56:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:56:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:56:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-11 19:56:24,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-10-11 19:56:24,187 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 620 flow. Second operand 3 states and 61 transitions. [2024-10-11 19:56:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 885 flow [2024-10-11 19:56:24,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 847 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:24,200 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 575 flow [2024-10-11 19:56:24,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=575, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2024-10-11 19:56:24,201 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2024-10-11 19:56:24,205 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 575 flow [2024-10-11 19:56:24,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:24,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:24,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:24,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:56:24,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:24,406 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:24,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1252568017, now seen corresponding path program 1 times [2024-10-11 19:56:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:24,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638326528] [2024-10-11 19:56:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:24,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:24,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:24,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:24,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:56:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:24,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:56:24,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:24,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:24,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:24,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638326528] [2024-10-11 19:56:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638326528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:24,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:24,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:56:24,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669105317] [2024-10-11 19:56:24,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:24,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:56:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:56:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:56:24,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:24,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:24,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:24,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:24,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:25,124 INFO L124 PetriNetUnfolderBase]: 1371/2453 cut-off events. [2024-10-11 19:56:25,124 INFO L125 PetriNetUnfolderBase]: For 6310/6600 co-relation queries the response was YES. [2024-10-11 19:56:25,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 2453 events. 1371/2453 cut-off events. For 6310/6600 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13255 event pairs, 130 based on Foata normal form. 136/2504 useless extension candidates. Maximal degree in co-relation 9483. Up to 1282 conditions per place. [2024-10-11 19:56:25,150 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 141 selfloop transitions, 11 changer transitions 0/164 dead transitions. [2024-10-11 19:56:25,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 164 transitions, 1358 flow [2024-10-11 19:56:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:56:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:56:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-10-11 19:56:25,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-10-11 19:56:25,152 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 575 flow. Second operand 8 states and 141 transitions. [2024-10-11 19:56:25,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 164 transitions, 1358 flow [2024-10-11 19:56:25,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 164 transitions, 1327 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:25,166 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 635 flow [2024-10-11 19:56:25,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=635, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-10-11 19:56:25,166 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2024-10-11 19:56:25,167 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 635 flow [2024-10-11 19:56:25,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:25,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:25,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:25,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 19:56:25,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:25,370 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:25,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2018474661, now seen corresponding path program 2 times [2024-10-11 19:56:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:25,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676446209] [2024-10-11 19:56:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:56:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:25,374 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:25,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:56:25,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:56:25,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:56:25,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:56:25,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:25,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:25,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:25,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676446209] [2024-10-11 19:56:25,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676446209] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 19:56:25,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:56:25,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-11 19:56:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844765097] [2024-10-11 19:56:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:25,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:56:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:56:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:56:25,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:25,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 635 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:25,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:25,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:25,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:25,976 INFO L124 PetriNetUnfolderBase]: 1346/2456 cut-off events. [2024-10-11 19:56:25,977 INFO L125 PetriNetUnfolderBase]: For 6472/6724 co-relation queries the response was YES. [2024-10-11 19:56:25,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9597 conditions, 2456 events. 1346/2456 cut-off events. For 6472/6724 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13401 event pairs, 401 based on Foata normal form. 89/2447 useless extension candidates. Maximal degree in co-relation 9538. Up to 1288 conditions per place. [2024-10-11 19:56:26,003 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 80 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2024-10-11 19:56:26,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 107 transitions, 917 flow [2024-10-11 19:56:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:56:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:56:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-10-11 19:56:26,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-10-11 19:56:26,007 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 635 flow. Second operand 5 states and 77 transitions. [2024-10-11 19:56:26,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 107 transitions, 917 flow [2024-10-11 19:56:26,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 905 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:26,020 INFO L231 Difference]: Finished difference. Result has 107 places, 92 transitions, 646 flow [2024-10-11 19:56:26,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=646, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2024-10-11 19:56:26,021 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 71 predicate places. [2024-10-11 19:56:26,021 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 646 flow [2024-10-11 19:56:26,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:26,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:26,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:26,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 19:56:26,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:26,222 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:26,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1760127011, now seen corresponding path program 1 times [2024-10-11 19:56:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:26,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720442134] [2024-10-11 19:56:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:26,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:26,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:26,226 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:26,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:56:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:26,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:56:26,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:26,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:26,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720442134] [2024-10-11 19:56:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720442134] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 19:56:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:56:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-11 19:56:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756520084] [2024-10-11 19:56:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:26,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:56:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:56:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:56:26,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:26,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:26,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:26,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:26,776 INFO L124 PetriNetUnfolderBase]: 1307/2412 cut-off events. [2024-10-11 19:56:26,777 INFO L125 PetriNetUnfolderBase]: For 7435/7552 co-relation queries the response was YES. [2024-10-11 19:56:26,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9893 conditions, 2412 events. 1307/2412 cut-off events. For 7435/7552 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12868 event pairs, 394 based on Foata normal form. 79/2425 useless extension candidates. Maximal degree in co-relation 9833. Up to 1239 conditions per place. [2024-10-11 19:56:26,792 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 84 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-10-11 19:56:26,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 963 flow [2024-10-11 19:56:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:56:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:56:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-10-11 19:56:26,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-10-11 19:56:26,794 INFO L175 Difference]: Start difference. First operand has 107 places, 92 transitions, 646 flow. Second operand 5 states and 78 transitions. [2024-10-11 19:56:26,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 963 flow [2024-10-11 19:56:26,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 940 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:26,806 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 648 flow [2024-10-11 19:56:26,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=648, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2024-10-11 19:56:26,807 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2024-10-11 19:56:26,807 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 648 flow [2024-10-11 19:56:26,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:26,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:26,807 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 19:56:26,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 19:56:27,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:27,011 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:27,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1582481593, now seen corresponding path program 3 times [2024-10-11 19:56:27,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:27,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405173240] [2024-10-11 19:56:27,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:56:27,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:27,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:27,013 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:27,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 19:56:27,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 19:56:27,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:56:27,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 19:56:27,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:27,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:29,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405173240] [2024-10-11 19:56:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405173240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:29,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 19:56:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937353121] [2024-10-11 19:56:29,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:29,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 19:56:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 19:56:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 19:56:29,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-10-11 19:56:29,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 648 flow. Second operand has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:29,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:29,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-10-11 19:56:29,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:42,344 INFO L124 PetriNetUnfolderBase]: 1115/2140 cut-off events. [2024-10-11 19:56:42,345 INFO L125 PetriNetUnfolderBase]: For 7503/7752 co-relation queries the response was YES. [2024-10-11 19:56:42,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8891 conditions, 2140 events. 1115/2140 cut-off events. For 7503/7752 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12001 event pairs, 757 based on Foata normal form. 83/2105 useless extension candidates. Maximal degree in co-relation 8673. Up to 1626 conditions per place. [2024-10-11 19:56:42,357 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 44 selfloop transitions, 66 changer transitions 0/127 dead transitions. [2024-10-11 19:56:42,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 127 transitions, 1096 flow [2024-10-11 19:56:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-11 19:56:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-11 19:56:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 513 transitions. [2024-10-11 19:56:42,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31863354037267083 [2024-10-11 19:56:42,363 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 648 flow. Second operand 46 states and 513 transitions. [2024-10-11 19:56:42,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 127 transitions, 1096 flow [2024-10-11 19:56:42,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 1083 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:42,376 INFO L231 Difference]: Finished difference. Result has 162 places, 127 transitions, 1049 flow [2024-10-11 19:56:42,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1049, PETRI_PLACES=162, PETRI_TRANSITIONS=127} [2024-10-11 19:56:42,376 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 126 predicate places. [2024-10-11 19:56:42,377 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 127 transitions, 1049 flow [2024-10-11 19:56:42,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.76923076923077) internal successors, (280), 26 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:42,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:42,377 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:42,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:42,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:42,578 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:42,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1406635212, now seen corresponding path program 1 times [2024-10-11 19:56:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:42,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815022510] [2024-10-11 19:56:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:42,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:42,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:42,582 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:42,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 19:56:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:42,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:56:42,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:42,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:56:42,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 18 [2024-10-11 19:56:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:42,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:43,061 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 19:56:43,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 89 treesize of output 68 [2024-10-11 19:56:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:44,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:44,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815022510] [2024-10-11 19:56:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815022510] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:44,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:44,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-10-11 19:56:44,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143581341] [2024-10-11 19:56:44,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:44,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:56:44,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:44,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:56:44,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:56:44,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-10-11 19:56:44,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 127 transitions, 1049 flow. Second operand has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:44,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:44,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-10-11 19:56:44,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:46,793 INFO L124 PetriNetUnfolderBase]: 2097/3780 cut-off events. [2024-10-11 19:56:46,793 INFO L125 PetriNetUnfolderBase]: For 9961/10161 co-relation queries the response was YES. [2024-10-11 19:56:46,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15457 conditions, 3780 events. 2097/3780 cut-off events. For 9961/10161 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 21533 event pairs, 601 based on Foata normal form. 97/3800 useless extension candidates. Maximal degree in co-relation 15364. Up to 2468 conditions per place. [2024-10-11 19:56:46,822 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 175 selfloop transitions, 46 changer transitions 1/236 dead transitions. [2024-10-11 19:56:46,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 236 transitions, 2202 flow [2024-10-11 19:56:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:56:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:56:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 214 transitions. [2024-10-11 19:56:46,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43673469387755104 [2024-10-11 19:56:46,824 INFO L175 Difference]: Start difference. First operand has 162 places, 127 transitions, 1049 flow. Second operand 14 states and 214 transitions. [2024-10-11 19:56:46,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 236 transitions, 2202 flow [2024-10-11 19:56:46,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 236 transitions, 2040 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-11 19:56:46,846 INFO L231 Difference]: Finished difference. Result has 159 places, 172 transitions, 1388 flow [2024-10-11 19:56:46,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1388, PETRI_PLACES=159, PETRI_TRANSITIONS=172} [2024-10-11 19:56:46,847 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 123 predicate places. [2024-10-11 19:56:46,847 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 172 transitions, 1388 flow [2024-10-11 19:56:46,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 13 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:46,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:46,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:46,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-11 19:56:47,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:47,049 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:47,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:47,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1497889166, now seen corresponding path program 2 times [2024-10-11 19:56:47,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:47,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222483318] [2024-10-11 19:56:47,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:56:47,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:47,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:47,053 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:47,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-11 19:56:47,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:56:47,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2024-10-11 19:56:47,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:56:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:56:47,311 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-11 19:56:47,311 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:56:47,312 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (13 of 14 remaining) [2024-10-11 19:56:47,314 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-10-11 19:56:47,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-10-11 19:56:47,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-10-11 19:56:47,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-10-11 19:56:47,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-10-11 19:56:47,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-10-11 19:56:47,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-10-11 19:56:47,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-10-11 19:56:47,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-10-11 19:56:47,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-10-11 19:56:47,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-10-11 19:56:47,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-10-11 19:56:47,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-10-11 19:56:47,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-11 19:56:47,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:47,517 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:47,571 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 19:56:47,571 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 19:56:47,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:56:47 BasicIcfg [2024-10-11 19:56:47,577 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 19:56:47,578 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 19:56:47,578 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 19:56:47,578 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 19:56:47,579 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:56:10" (3/4) ... [2024-10-11 19:56:47,580 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-11 19:56:47,581 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 19:56:47,582 INFO L158 Benchmark]: Toolchain (without parser) took 38825.90ms. Allocated memory was 60.8MB in the beginning and 534.8MB in the end (delta: 474.0MB). Free memory was 28.0MB in the beginning and 293.6MB in the end (delta: -265.5MB). Peak memory consumption was 207.5MB. Max. memory is 16.1GB. [2024-10-11 19:56:47,582 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 48.2MB. Free memory is still 21.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:56:47,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.31ms. Allocated memory is still 60.8MB. Free memory was 27.7MB in the beginning and 30.2MB in the end (delta: -2.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-10-11 19:56:47,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.41ms. Allocated memory is still 60.8MB. Free memory was 30.2MB in the beginning and 28.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 19:56:47,582 INFO L158 Benchmark]: Boogie Preprocessor took 74.31ms. Allocated memory is still 60.8MB. Free memory was 28.1MB in the beginning and 25.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 19:56:47,583 INFO L158 Benchmark]: RCFGBuilder took 831.08ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 25.1MB in the beginning and 31.0MB in the end (delta: -5.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-10-11 19:56:47,583 INFO L158 Benchmark]: TraceAbstraction took 37473.06ms. Allocated memory was 73.4MB in the beginning and 534.8MB in the end (delta: 461.4MB). Free memory was 30.1MB in the beginning and 293.6MB in the end (delta: -263.5MB). Peak memory consumption was 196.6MB. Max. memory is 16.1GB. [2024-10-11 19:56:47,583 INFO L158 Benchmark]: Witness Printer took 3.46ms. Allocated memory is still 534.8MB. Free memory is still 293.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:56:47,586 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 48.2MB. Free memory is still 21.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.31ms. Allocated memory is still 60.8MB. Free memory was 27.7MB in the beginning and 30.2MB in the end (delta: -2.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.41ms. Allocated memory is still 60.8MB. Free memory was 30.2MB in the beginning and 28.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.31ms. Allocated memory is still 60.8MB. Free memory was 28.1MB in the beginning and 25.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 831.08ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 25.1MB in the beginning and 31.0MB in the end (delta: -5.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 37473.06ms. Allocated memory was 73.4MB in the beginning and 534.8MB in the end (delta: 461.4MB). Free memory was 30.1MB in the beginning and 293.6MB in the end (delta: -263.5MB). Peak memory consumption was 196.6MB. Max. memory is 16.1GB. * Witness Printer took 3.46ms. Allocated memory is still 534.8MB. Free memory is still 293.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [A={0:0}, N=1, \old(size)=1, arr={3:0}, counter=0, i=0, size=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [A={0:0}, N=1, \old(size)=1, arr={3:0}, counter=0, i=1, size=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={3:0}, N=1, counter=0, t1=-1] [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={3:0}, N=1, counter=0, t1=-1, t2=0] [L62] 2 int i=0; VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=0, i=0] [L62] COND TRUE 2 i= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L49] 1 int i=0; VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=0, i=0] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L54] 1 counter = tmp VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=1610612736, i=0, tmp=1610612736] [L49] 1 i++ VAL [A={3:0}, N=1, \old(_argptr)={0:0}, _argptr={0:0}, counter=1610612736, i=1] [L49] COND FALSE 1 !(i